Super composite sealing all-welded ball valve

Abstract

The utility model relates to the technical field of all-welded ball valves, in particular to a super composite sealing all-welded ball valve which comprises a ball valve body, an outer covering pipe is fixed to the outer side of the ball valve body, round groove bodies are formed in the top ends of the ball valve body and the outer covering pipe, a connecting ring is fixed to the top end of the outer covering pipe, and a connecting structure is fixed to the top end of the connecting ring. A positioning ring and an external connection ring are arranged in a valve cavity in the middle of the ball valve, the positioning ring and the external connection ring are fixedly connected through threads, an inner pipe is fixed to the inner side of the ball valve, a rotating ring is fixed to the inner side of the inner pipe, a rotating shaft is arranged on the inner side of the rotating ring, and an adapter is fixed to the top end of the rotating shaft. The rotating shaft at the bottom can rotate relative to the ball valve in the rotating process, the rotating ring structure in the inner pipe structure in the ball valve can make contact with the rotating shaft structure in the inner pipe structure, and therefore the ball can be driven to rotate in the rotating process, and the opening and closing function is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fully welded ball valves, in particular to a super composite sealing fully welded ball valve. Background Art

[0002] Fully welded ball valves are widely used in various fields. Their superior quality and high performance stability are beyond the reach of ordinary cast steel ball valves. The service life of fully welded ball valves is much longer than that of cast steel ball valves. Fully welded ball valves are widely used in various pipeline equipment such as city gas, city heating, petrochemical industry, shipbuilding, steel, pressure regulating stations, power plants, etc.

[0003] Most ball valves are opened and closed by turning a handle to control the rotation of a shaft. In existing fully welded ball valves, the handle is mostly fixedly connected to the shaft, which makes it easy for the handle to rotate the shaft under the action of external force, causing the ball valve to be opened by mistake. Utility Model Content

[0004] Technical problems solved

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a super composite sealed fully welded ball valve, which can effectively solve the problem in the prior art that the handle is easily rotated by external force, causing the ball valve to be opened by mistake.

[0006] Technical Solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model provides a super composite sealing fully welded ball valve, including a ball valve, wherein an outer tube is fixed to the outside of the ball valve, a circular groove body is opened at the top of the ball valve and the outer tube, a connecting ring is fixed to the top of the outer tube, and a connecting structure is fixed to the top of the connecting ring, a positioning ring and an outer connecting ring are arranged in the middle valve cavity of the ball valve, the positioning ring and the outer connecting ring are fixedly connected by threads, an inner tube is fixed to the inside of the ball valve, a swivel is fixed to the inside of the inner tube, the inner side wall of the swivel contacts the outer surface of the rotating shaft, and an adapter is fixed to the top of the rotating shaft, the connecting structure includes a connecting disk, an outer cylinder fixed to the top of the connecting disk, a spring sleeved in the connecting disk and a pressure plate arranged at the top of the spring, the middle top of the pressure plate is fixed to the round rod, the middle bottom end of the pressure plate is fixedly connected to the square rod, and the bottom end of the square rod is fixed to the adapter.

[0009] Furthermore, a thread groove is provided in the middle of the outer side of the positioning ring, a protrusion structure adapted to the size of the thread groove is fixed on the inner side of the external ring, and the outer sides of the positioning ring and the external ring are both inclined structures, and the slope of the external ring is relatively gentle.

[0010] Furthermore, a square groove structure is provided in the middle of the adapter, and the connecting plate and the connecting ring are fixedly connected by bolts.

[0011] Furthermore, a through groove is provided in the middle of the connecting disk, and a top cover is fixed to the top of the connecting disk, and the round rod passes through the top cover.

[0012] Furthermore, the bottom end of the rotating shaft is fixedly connected to the ball structure in the ball valve.

[0013] Furthermore, the spring is arranged inside the connecting plate, and the top end of the spring maintains contact with the pressure plate.

[0014] Beneficial effects

[0015] Compared with the known public technologies, the technical solution provided by this utility model has the following beneficial effects:

[0016] The utility model provides a connection structure, in which the user can transmit power from the round rod to the inside, and rotate the ball inside the square rod-rotating shaft-ball valve. Since the square rod and the adapter seat are in a square socket relationship, the rotation transmission function can be realized. When rotating, the rotation can be carried out between the rotating shaft at the bottom and the ball valve. In the inner tube structure of the ball valve, the internal swivel structure can contact the rotating shaft structure. Therefore, when rotating, the ball can be driven to rotate, thereby playing the function of opening and closing.

[0017] In this device, a connecting plate-spring-round rod-square rod and a pressure plate structure at the top are provided in the connecting structure. When operating, the user can first press down the round rod structure to drive the pressure plate to press down the spring and rotate the round rod, and the pressure plate-square rod will rotate accordingly (the top of the spring and the pressure plate are in contact and are not fixed, so it will not affect its rotation). When the spring is at its original length, there is a gap between the square rod and the adapter groove. Therefore, after the spring is compressed in the outer tube, the square rod contacts the adapter groove and realizes the rotation function. By adding the downward pressing action, the ball valve structure is protected from being accidentally opened when not in use, thereby improving practicality. When no pressure is pressed down, the round rod will only idle and will not contact the internal sphere.

[0018] In this device, the outer tube structure is set up to effectively shield the mechanical and medium noise generated by the internal structure, and the connecting structure can play the role of a "valve". Since the spring is at its original length when not in use, the pressure plate structure is in contact with the inside of the top cover on the outside of the outer cylinder. If the high-pressure medium of the ball valve leaks from the ball valve, it will first be collected in the outer tube, and then can be sealed by the pressure plate-top cover, reducing the possibility of medium leakage and protecting the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a structural breakdown diagram of the utility model;

[0022] Figure 3 This is a structural cross-sectional view of the utility model;

[0023] Figure 4 for Figure 5 Schematic diagram of the structure at A in the middle;

[0024] Figure 5 This is a structural breakdown diagram of the connection structure of the utility model.

[0025] The numbers in the figure represent: 1. Ball valve; 11. Positioning ring; 12. External connecting ring; 13. Inner tube; 14. Swivel; 15. Rotating shaft; 16. Adapter seat; 2. Outer tube; 21. Connecting ring; 3. Connecting structure; 31. Connecting plate; 32. Outer tube; 33. Spring; 34. Pressure plate; 35. Square rod; 36. Round rod; 37. Top cover. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Example: Super composite seal fully welded ball valve, refer to the attached Figure 1 -Attached Figure 5, including a ball valve 1, an outer tube 2 is fixed to the outside of the ball valve 1, a circular groove body is opened at the top of the ball valve 1 and the outer tube 2, a connecting ring 21 is fixed to the top of the outer tube 2, and a connecting structure 3 is fixed to the top of the connecting ring 21. A positioning ring 11 and an outer ring 12 are provided in the middle valve cavity of the ball valve 1, and the positioning ring 11 and the outer ring 12 are fixedly connected by threads. An inner tube 13 is fixed to the inside of the ball valve 1, and a swivel 14 is fixed to the inside of the inner tube 13. The inner side wall of the swivel 14 contacts the outer surface of the rotating shaft 15, and the top of the rotating shaft 15 is fixed with an adapter seat 16. The connecting structure 3 includes a connecting disk 31, an outer cylinder 32 fixed to the top of the connecting disk 31, a spring 33 sleeved in the connecting disk 31 and a spring 33 provided in the connecting disk 31. The pressure plate 34 at the top of the spring 33, the middle top of the pressure plate 34 is fixed to the round rod 36, the middle bottom end of the pressure plate 34 is fixedly connected to the square rod 35, and the bottom end of the square rod 35 is inserted and fixed to the adapter seat 16; through the provided connection structure 3, the user can transmit the power from the round rod 36 to the inside, and rotate the ball in the ball valve 1 through the square rod 35-rotating shaft 15. Since the square rod 35 and the adapter seat 16 are in a square socket relationship, the rotation transmission function can be realized, and when rotating, it can be rotated between the bottom rotating shaft 15 and the ball valve 1. In the inner tube 13 structure in the ball valve 1, it can be contacted with the rotating shaft 15 structure through its internal rotating ring 14 structure, so when rotating, it can drive the ball to rotate, thereby playing the function of opening and closing.

[0029] A thread groove is provided in the middle of the outer side of the positioning ring 11, and a protrusion structure adapted to the size of the thread groove is fixed on the inner side of the external ring 12. The outer sides of the positioning ring 11 and the external ring 12 are both inclined structures, and the slope of the external ring 12 is relatively gentle. By arranging a connecting plate 31-spring 33-round rod 36-square rod 35 and a pressure plate 34 at the top in the connecting structure 3, the user can first press down the round rod 36 structure during operation, drive the pressure plate 34 to press the spring 33 downward, and rotate the round rod 36, the pressure plate 34 -The square rod 35 rotates accordingly (the top end of the spring 33 is in contact with the pressure plate 34 and is not fixed, so it will not affect its rotation). When the spring 33 is at its original length, there is a gap between the square rod 35 and the adapter groove. Therefore, after the spring 33 is compressed in the outer cylinder 32, the square rod 35 contacts the adapter groove and realizes the rotation function. By adding a downward pressing action, the ball valve 1 structure is protected from being accidentally opened when not in use, thereby improving practicality. When not pressed down, the round rod 36 will only rotate idly and will not contact the internal ball.

[0030] A square groove structure is provided in the middle of the adapter seat 16, and the connecting disc 31 is fixedly connected to the connecting ring 21 by bolts; a through groove is provided in the middle of the connecting disc 31, and a top cover 37 is fixed to the top of the connecting disc 31, and the round rod 36 passes through the top cover 37; the bottom end of the rotating shaft 15 is fixedly connected to the spherical structure in the ball valve 1; the spring 33 is arranged inside the connecting disc 31, and the top of the spring 33 maintains contact with the pressure plate 34; the outer tube 2 structure is provided, which can effectively shield the mechanical and medium noise generated by the internal structure, and the connecting structure 3 can play the role of a "valve". Since the spring 33 is at its original length when not in use, the pressure plate 34 structure is in contact with the inside of the top cover 37 on the outside of the outer cylinder 32, if the high-pressure medium of the ball valve 1 leaks from the ball valve 1, it will first be collected in the outer tube 2, and then can be sealed by the pressure plate 34-top cover 37, reducing the possibility of medium leakage and protecting the external environment.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the various embodiments of the present invention.

Claims

1. Super composite seal fully welded ball valve, characterized by: The invention comprises a ball valve (1), wherein an outer tube (2) is fixed on the outside of the ball valve (1), a circular groove body is provided at the top end of the ball valve (1) and the outer tube (2), a connecting ring (21) is fixed on the top end of the outer tube (2), a connecting structure (3) is fixed on the top end of the connecting ring (21), a positioning ring (11) and an outer connecting ring (12) are provided in the middle valve cavity of the ball valve (1), the positioning ring (11) and the outer connecting ring (12) are fixedly connected by threads, an inner tube (13) is fixed on the inside of the ball valve (1), and a rotating ring (14) is fixed on the inside of the inner tube (13) The inner side wall of the rotating ring (14) contacts the outer surface of the rotating shaft (15), and the top of the rotating shaft (15) is fixed with an adapter seat (16). The connecting structure (3) includes a connecting disk (31), an outer cylinder (32) fixed to the top of the connecting disk (31), a spring (33) sleeved in the connecting disk (31), and a pressure plate (34) arranged at the top of the spring (33). The top of the middle part of the pressure plate (34) is fixed to the round rod (36), the bottom of the middle part of the pressure plate (34) is fixedly connected to the square rod (35), and the bottom end of the square rod (35) is inserted and fixed to the adapter seat (16).

2. The super composite sealing fully welded ball valve according to claim 1, characterized in that: A thread groove is provided in the middle of the outer side of the positioning ring (11), and a protruding structure that matches the size of the thread groove is fixed on the inner side of the external connecting ring (12). The outer sides of the positioning ring (11) and the external connecting ring (12) are both inclined structures, and the slope of the external connecting ring (12) is relatively gentle.

3. The super composite sealing fully welded ball valve according to claim 1, characterized in that: A square groove structure is provided in the middle of the adapter seat (16), and the connecting plate (31) and the connecting ring (21) are fixedly connected by bolts.

4. The super composite seal fully welded ball valve according to claim 1, characterized in that: A through slot is provided in the middle of the connecting disk (31), and a top cover (37) is fixed to the top of the connecting disk (31), and the round rod (36) passes through the top cover (37).

5. The super composite seal fully welded ball valve according to claim 4, characterized in that: The bottom end of the rotating shaft (15) is fixedly connected to the spherical structure in the ball valve (1).

6. The super composite seal fully welded ball valve according to claim 1, characterized in that: The spring (33) is arranged inside the connecting disk (31), and the top end of the spring (33) maintains contact with the pressure disk (34).

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